Well, quite. Why would a company that makes its money selling ads penalise sites that show its ads? And when you get to that state, you've pretty much turned t

Well, quite. Why would a company that makes its money selling ads penalise sites that show its ads? And when you get to that state, you've pretty much turned the entire web into content marketing for your ad sales business. So - of course search quality suffers. Search quality is not the point.